Description

Calcium Dioctadecyl Diphosphonate is a high-performance organophosphorus compound widely utilized as a multifunctional additive. Its primary value lies in its exceptional ability to function as a stabilizer, anti-wear agent, and corrosion inhibitor in demanding industrial formulations. This product is essential for manufacturers in the lubricants, polymers, and specialty chemicals sectors seeking to enhance product longevity and performance under extreme conditions.

Application

• Lubricant & Grease Additive: Acts as a high-performance anti-wear, extreme pressure (EP), and corrosion inhibitor additive in synthetic and mineral-based lubricants and greases.
• Polymer Stabilizer: Used as a thermal and oxidative stabilizer in plastics and synthetic fibers to prevent degradation during processing and extend service life.
• Metalworking Fluids: Incorporated into cutting oils, hydraulic fluids, and other metalworking formulations to provide superior lubrication and protect machinery from wear and rust.
• Fuel & Oil Additive: Serves as a detergent and dispersant in fuel and engine oil formulations to control deposits and improve engine cleanliness.
• Corrosion Inhibitor: Applied in industrial water treatment systems and as an additive in coatings to protect metal surfaces from corrosion.
• Synergistic Co-additive: Often used in combination with other additives like zinc dialkyldithiophosphates (ZDDP) to enhance overall performance packages.

Basic Information

Product Name	Calcium Dioctadecyl Diphosphonate
CAS No.	84030-24-0
Molecular Formula	C36H74CaO6P2
Molecular Weight	705.0 g/mol (approx.)
Synonyms	Calcium Distearyl Diphosphonate; Calcium Bis(octadecyl) Diphosphonate; Dioctadecyl Phosphonic Acid, Calcium Salt; Phosphonic Acid, P,P'-(1-Methylethylidene)bis-, Dioctadecyl Ester, Calcium Salt; Calcium O,O'-Dioctadecyl P,P'-Isopropylidene Diphosphonate; Lubricant Additive T308; Antiwear Agent T308
EINECS	Contact for details

Quality Control

Our Calcium Dioctadecyl Diphosphonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency and meets defined specifications for critical parameters such as calcium content, phosphorus content, and acidity. A Certificate of Analysis (COA) documenting these results is available for every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. The product may be hygroscopic (moisture-sensitive); ensure containers are sealed after use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white waxy solid or powder
Identification (IR)	Conforms
Assay (Calcium Content)	5.4 - 5.8 %
Phosphorus Content	8.5 - 9.2 %
Acidity (as H3PO4)	≤ 0.5 %
Loss on Drying	≤ 1.0 %
Melting Point	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.